Re: kern/52700: Testbed VMs hang on wd1 access since recent ATA changes

[Michael van Elst <mlelstv%serpens.de@localhost>]

The following reply was made to PR kern/52700; it has been noted by GNATS.

From: Michael van Elst <mlelstv%serpens.de@localhost>
To: =?iso-8859-1?Q?Jarom=EDr?= Dole?ek <jaromir.dolecek%gmail.com@localhost>
Cc: gnats-bugs%netbsd.org@localhost, mlelstv%netbsd.org@localhost, gnats-admin%netbsd.org@localhost,
        netbsd-bugs%netbsd.org@localhost, Andreas Gustafsson <gson%gson.org@localhost>
Subject: Re: kern/52700: Testbed VMs hang on wd1 access since recent ATA
 changes
Date: Mon, 6 Nov 2017 06:33:13 +0100

 On Sun, Nov 05, 2017 at 02:57:10PM +0100, Jaromír Dole?ek wrote:
 > 
 > I had a brief look into wd.c, seems after the dksubrification, the wddone()
 > no longer calls ata_channel_start(), which likely will cause I/O to stall
 > on machines with port multiplier. This should be fixed of course, but I
 > don't think it causes this issue.
 
 Doesn't stall I/O only for port multiplier, but probably also for
 PATA slave drives..
 
 
 -- 
                                 Michael van Elst
 Internet: mlelstv%serpens.de@localhost
                                 "A potential Snark may lurk in every tree."